Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
0100199heavily pollutedgood361excellent
0000146heavily pollutedgood371excellent
2300153heavily pollutedgood341excellent
2200139moderately pollutedgood311excellent
2100131moderately pollutedgood311excellent
2000127moderately pollutedgood291excellent
1900122moderately pollutedgood291excellent
1800108moderately pollutedgood251excellent
1700110moderately pollutedgood221excellent
1600101moderately pollutedexcellent201excellent
150087lightly pollutedexcellent171excellent
140084lightly pollutedexcellent171excellent
130061lightly pollutedexcellent131excellent
120050goodexcellent121excellent
110060goodexcellent111excellent
100063lightly pollutedexcellent101excellent
090065lightly pollutedexcellent101excellent
080074lightly pollutedexcellent111excellent
070076lightly pollutedexcellent111excellent
060073lightly pollutedexcellent121excellent
050086lightly pollutedexcellent141excellent
040092lightly pollutedexcellent141excellent
030095lightly pollutedexcellent151excellent
020095lightly pollutedexcellent151excellent